The following code allows you to block specific user agents or referrers from being tracked with the Tracking add-on. It was written for a very specific use case in mind but can still serve you as a basis to implement your own, custom filter.

add_filter( 'advanced-ads-tracking-do-tracking', 'my_advads_tracking_filter', 10, 3 );
function my_advads_tracking_filter( $status, $ad_id, $table ){
    
    // possible harmful user agents, can be partial
    $blocked_user_agents = array(
	    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538',
	    'Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538',
    );
    
    // possible harmful referrers
    $blocked_referrers = array(
	    'example.com',
    );
    
    // only check clicks, use 'impressions' for impressions 
    // or remove the condition to check clicks and impressions
    if( $table && strpos( $table, 'clicks' ) ){
	
	    $block_user_agent = false;
	    $block_referrer = false;
	
	    // check user agent
	    if (isset($_SERVER['HTTP_USER_AGENT']) && '' !== $_SERVER['HTTP_USER_AGENT']) {
		    $agent = sanitize_text_field(wp_unslash($_SERVER['HTTP_USER_AGENT']));
		    
		    foreach( $blocked_user_agents as $_agent ){
			    // stop after the first matching user agent we found
			    if( false !== strpos( $agent, $_agent ) ){
				    $block_user_agent = true;
				    break;
			    }
		    }
	    }
	    
	    // check referrer
	    if (isset($_SERVER['HTTP_REFERER']) && '' !== $_SERVER['HTTP_REFERER']) {
		    $referrer = sanitize_text_field(wp_unslash($_SERVER['HTTP_REFERER']));
		    
		    foreach( $blocked_referrers as $_referrer ){
			    // stop after the first matching user agent we found
			    if( false !== strpos( $referrer, $_referrer ) ){
				    $block_referrer = true;
				    break;
			    }
		    }
	    }
	    
	    // only block the click if we found a blocked user agent AND referrer
	    if( $block_user_agent && $block_referrer ){
		    return false;
	    }

    }
    
    return $status;
}

 

 Code-Snippets